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adds SPIR-V tests for scalar printf operands #2211

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adds SPIR-V tests for scalar printf operands #2211

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78c7363
add tests for scalar printf operands
bashbaug Jan 7, 2025
0b06b49
fix formatting
bashbaug Jan 7, 2025
6947e33
fix memory leak
bashbaug Jan 10, 2025
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2 changes: 1 addition & 1 deletion test_common/harness/os_helpers.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -577,7 +577,7 @@ char* get_temp_filename()
close(fd);
#elif defined(_WIN32)
UINT ret = GetTempFileName(".", "tmp", 0, gFileName);
if (ret == 0) return gFileName;
if (ret == 0) return strdup(gFileName);
#else
MTdata d = init_genrand((cl_uint)time(NULL));
sprintf(gFileName, "tmpfile.%u", genrand_int32(d));
Expand Down
1 change: 1 addition & 0 deletions test_conformance/spirv_new/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ set(${MODULE_NAME}_SOURCES
test_basic_versions.cpp
test_cl_khr_expect_assume.cpp
test_decorate.cpp
test_extinst_printf.cpp
test_get_program_il.cpp
test_linkage.cpp
test_no_integer_wrap_decoration.cpp
Expand Down
85 changes: 85 additions & 0 deletions test_conformance/spirv_new/spirv_asm/printf_operands_scalar_fp32.spvasm32
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Original file line number Diff line number Diff line change
@@ -0,0 +1,85 @@
; kernel void printf_operands_scalar_fp32(float f)
; {
; printf("a = %.1a\n", f);
; printf("A = %.1A\n", f);
; printf("e = %.1e\n", f);
; printf("E = %.1E\n", f);
; printf("f = %.1f\n", f);
; printf("F = %.1F\n", f);
; printf("g = %.1g\n", f);
; printf("G = %.1G\n", f);
; }
OpCapability Addresses
OpCapability Linkage
OpCapability Kernel
OpCapability Int8
%clext = OpExtInstImport "OpenCL.std"
OpMemoryModel Physical32 OpenCL
OpEntryPoint Kernel %test "printf_operands_scalar_fp32"
%uchar = OpTypeInt 8 0
%uint = OpTypeInt 32 0
%uint_8 = OpConstant %uint 8
%uint_10 = OpConstant %uint 10
%uint_12 = OpConstant %uint 12
%uchar_nul = OpConstant %uchar 0
%uchar_nl = OpConstant %uchar 10
%uchar_sp = OpConstant %uchar 32
%uchar_pct = OpConstant %uchar 37
%uchar_dot = OpConstant %uchar 46
%uchar_1 = OpConstant %uchar 49
%uchar_eq = OpConstant %uchar 61
%uchar_A = OpConstant %uchar 65
%uchar_E = OpConstant %uchar 69
%uchar_F = OpConstant %uchar 70
%uchar_G = OpConstant %uchar 71
%uchar_a = OpConstant %uchar 97
%uchar_e = OpConstant %uchar 101
%uchar_f = OpConstant %uchar 102
%uchar_g = OpConstant %uchar 103
%string_10 = OpTypeArray %uchar %uint_10
%cptr_string_10 = OpTypePointer UniformConstant %string_10
%void = OpTypeVoid
%float = OpTypeFloat 32
%kernel_sig = OpTypeFunction %void %float
%cptr_char = OpTypePointer UniformConstant %uchar

%array_a = OpConstantComposite %string_10 %uchar_a %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_a %uchar_nl %uchar_nul ; "a = %.1a\n"
%string_a = OpVariable %cptr_string_10 UniformConstant %array_a
%array_A = OpConstantComposite %string_10 %uchar_A %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_A %uchar_nl %uchar_nul ; "A = %.1A\n"
%string_A = OpVariable %cptr_string_10 UniformConstant %array_A
%array_e = OpConstantComposite %string_10 %uchar_e %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_e %uchar_nl %uchar_nul ; "e = %.1e\n"
%string_e = OpVariable %cptr_string_10 UniformConstant %array_e
%array_E = OpConstantComposite %string_10 %uchar_E %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_E %uchar_nl %uchar_nul ; "E = %.1E\n"
%string_E = OpVariable %cptr_string_10 UniformConstant %array_E
%array_f = OpConstantComposite %string_10 %uchar_f %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_f %uchar_nl %uchar_nul ; "f = %.1f\n"
%string_f = OpVariable %cptr_string_10 UniformConstant %array_f
%array_F = OpConstantComposite %string_10 %uchar_F %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_F %uchar_nl %uchar_nul ; "F = %.1F\n"
%string_F = OpVariable %cptr_string_10 UniformConstant %array_F
%array_g = OpConstantComposite %string_10 %uchar_g %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_g %uchar_nl %uchar_nul ; "g = %.1g\n"
%string_g = OpVariable %cptr_string_10 UniformConstant %array_g
%array_G = OpConstantComposite %string_10 %uchar_G %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_G %uchar_nl %uchar_nul ; "G = %.1G\n"
%string_G = OpVariable %cptr_string_10 UniformConstant %array_G

%test = OpFunction %void None %kernel_sig
%f = OpFunctionParameter %float
%entry = OpLabel

%fmt_a = OpBitcast %cptr_char %string_a
%printf_a = OpExtInst %uint %clext printf %fmt_a %f
%fmt_A = OpBitcast %cptr_char %string_A
%printf_A = OpExtInst %uint %clext printf %fmt_A %f
%fmt_e = OpBitcast %cptr_char %string_e
%printf_e = OpExtInst %uint %clext printf %fmt_e %f
%fmt_E = OpBitcast %cptr_char %string_E
%printf_E = OpExtInst %uint %clext printf %fmt_E %f
%fmt_f = OpBitcast %cptr_char %string_f
%printf_f = OpExtInst %uint %clext printf %fmt_f %f
%fmt_F = OpBitcast %cptr_char %string_F
%printf_F = OpExtInst %uint %clext printf %fmt_F %f
%fmt_g = OpBitcast %cptr_char %string_g
%printf_g = OpExtInst %uint %clext printf %fmt_g %f
%fmt_G = OpBitcast %cptr_char %string_G
%printf_G = OpExtInst %uint %clext printf %fmt_G %f

OpReturn
OpFunctionEnd
85 changes: 85 additions & 0 deletions test_conformance/spirv_new/spirv_asm/printf_operands_scalar_fp32.spvasm64
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Original file line number Diff line number Diff line change
@@ -0,0 +1,85 @@
; kernel void printf_operands_scalar_fp32(float f)
; {
; printf("a = %.1a\n", f);
; printf("A = %.1A\n", f);
; printf("e = %.1e\n", f);
; printf("E = %.1E\n", f);
; printf("f = %.1f\n", f);
; printf("F = %.1F\n", f);
; printf("g = %.1g\n", f);
; printf("G = %.1G\n", f);
; }
OpCapability Addresses
OpCapability Linkage
OpCapability Kernel
OpCapability Int8
%clext = OpExtInstImport "OpenCL.std"
OpMemoryModel Physical64 OpenCL
OpEntryPoint Kernel %test "printf_operands_scalar_fp32"
%uchar = OpTypeInt 8 0
%uint = OpTypeInt 32 0
%uint_8 = OpConstant %uint 8
%uint_10 = OpConstant %uint 10
%uint_12 = OpConstant %uint 12
%uchar_nul = OpConstant %uchar 0
%uchar_nl = OpConstant %uchar 10
%uchar_sp = OpConstant %uchar 32
%uchar_pct = OpConstant %uchar 37
%uchar_dot = OpConstant %uchar 46
%uchar_1 = OpConstant %uchar 49
%uchar_eq = OpConstant %uchar 61
%uchar_A = OpConstant %uchar 65
%uchar_E = OpConstant %uchar 69
%uchar_F = OpConstant %uchar 70
%uchar_G = OpConstant %uchar 71
%uchar_a = OpConstant %uchar 97
%uchar_e = OpConstant %uchar 101
%uchar_f = OpConstant %uchar 102
%uchar_g = OpConstant %uchar 103
%string_10 = OpTypeArray %uchar %uint_10
%cptr_string_10 = OpTypePointer UniformConstant %string_10
%void = OpTypeVoid
%float = OpTypeFloat 32
%kernel_sig = OpTypeFunction %void %float
%cptr_char = OpTypePointer UniformConstant %uchar

%array_a = OpConstantComposite %string_10 %uchar_a %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_a %uchar_nl %uchar_nul ; "a = %.1a\n"
%string_a = OpVariable %cptr_string_10 UniformConstant %array_a
%array_A = OpConstantComposite %string_10 %uchar_A %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_A %uchar_nl %uchar_nul ; "A = %.1A\n"
%string_A = OpVariable %cptr_string_10 UniformConstant %array_A
%array_e = OpConstantComposite %string_10 %uchar_e %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_e %uchar_nl %uchar_nul ; "e = %.1e\n"
%string_e = OpVariable %cptr_string_10 UniformConstant %array_e
%array_E = OpConstantComposite %string_10 %uchar_E %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_E %uchar_nl %uchar_nul ; "E = %.1E\n"
%string_E = OpVariable %cptr_string_10 UniformConstant %array_E
%array_f = OpConstantComposite %string_10 %uchar_f %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_f %uchar_nl %uchar_nul ; "f = %.1f\n"
%string_f = OpVariable %cptr_string_10 UniformConstant %array_f
%array_F = OpConstantComposite %string_10 %uchar_F %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_F %uchar_nl %uchar_nul ; "F = %.1F\n"
%string_F = OpVariable %cptr_string_10 UniformConstant %array_F
%array_g = OpConstantComposite %string_10 %uchar_g %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_g %uchar_nl %uchar_nul ; "g = %.1g\n"
%string_g = OpVariable %cptr_string_10 UniformConstant %array_g
%array_G = OpConstantComposite %string_10 %uchar_G %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_G %uchar_nl %uchar_nul ; "G = %.1G\n"
%string_G = OpVariable %cptr_string_10 UniformConstant %array_G

%test = OpFunction %void None %kernel_sig
%f = OpFunctionParameter %float
%entry = OpLabel

%fmt_a = OpBitcast %cptr_char %string_a
%printf_a = OpExtInst %uint %clext printf %fmt_a %f
%fmt_A = OpBitcast %cptr_char %string_A
%printf_A = OpExtInst %uint %clext printf %fmt_A %f
%fmt_e = OpBitcast %cptr_char %string_e
%printf_e = OpExtInst %uint %clext printf %fmt_e %f
%fmt_E = OpBitcast %cptr_char %string_E
%printf_E = OpExtInst %uint %clext printf %fmt_E %f
%fmt_f = OpBitcast %cptr_char %string_f
%printf_f = OpExtInst %uint %clext printf %fmt_f %f
%fmt_F = OpBitcast %cptr_char %string_F
%printf_F = OpExtInst %uint %clext printf %fmt_F %f
%fmt_g = OpBitcast %cptr_char %string_g
%printf_g = OpExtInst %uint %clext printf %fmt_g %f
%fmt_G = OpBitcast %cptr_char %string_G
%printf_G = OpExtInst %uint %clext printf %fmt_G %f

OpReturn
OpFunctionEnd
93 changes: 93 additions & 0 deletions test_conformance/spirv_new/spirv_asm/printf_operands_scalar_fp64.spvasm32
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Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,93 @@
; kernel void printf_operands_scalar_fp64(double d)
; {
; printf("a = %.1a\n", d);
; printf("A = %.1A\n", d);
; printf("e = %.1e\n", d);
; printf("E = %.1E\n", d);
; printf("f = %.1f\n", d);
; printf("F = %.1F\n", d);
; printf("g = %.1g\n", d);
; printf("G = %.1G\n", d);
; }
OpCapability Addresses
OpCapability Linkage
OpCapability Kernel
OpCapability Float64
OpCapability Int8
%clext = OpExtInstImport "OpenCL.std"
OpMemoryModel Physical32 OpenCL
OpEntryPoint Kernel %test "printf_operands_scalar_fp64"
%uchar = OpTypeInt 8 0
%uint = OpTypeInt 32 0
%uint_8 = OpConstant %uint 8
%uint_10 = OpConstant %uint 10
%uint_12 = OpConstant %uint 12
%uchar_nul = OpConstant %uchar 0
%uchar_nl = OpConstant %uchar 10
%uchar_sp = OpConstant %uchar 32
%uchar_pct = OpConstant %uchar 37
%uchar_dot = OpConstant %uchar 46
%uchar_1 = OpConstant %uchar 49
%uchar_eq = OpConstant %uchar 61
%uchar_A = OpConstant %uchar 65
%uchar_E = OpConstant %uchar 69
%uchar_F = OpConstant %uchar 70
%uchar_G = OpConstant %uchar 71
%uchar_X = OpConstant %uchar 88
%uchar_a = OpConstant %uchar 97
%uchar_d = OpConstant %uchar 100
%uchar_e = OpConstant %uchar 101
%uchar_f = OpConstant %uchar 102
%uchar_g = OpConstant %uchar 103
%uchar_h = OpConstant %uchar 104
%uchar_i = OpConstant %uchar 105
%uchar_o = OpConstant %uchar 111
%uchar_u = OpConstant %uchar 117
%uchar_x = OpConstant %uchar 120
%string_10 = OpTypeArray %uchar %uint_10
%cptr_string_10 = OpTypePointer UniformConstant %string_10
%void = OpTypeVoid
%double = OpTypeFloat 64
%kernel_sig = OpTypeFunction %void %double
%cptr_char = OpTypePointer UniformConstant %uchar

%array_a = OpConstantComposite %string_10 %uchar_a %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_a %uchar_nl %uchar_nul ; "a = %.1a\n"
%string_a = OpVariable %cptr_string_10 UniformConstant %array_a
%array_A = OpConstantComposite %string_10 %uchar_A %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_A %uchar_nl %uchar_nul ; "A = %.1A\n"
%string_A = OpVariable %cptr_string_10 UniformConstant %array_A
%array_e = OpConstantComposite %string_10 %uchar_e %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_e %uchar_nl %uchar_nul ; "e = %.1e\n"
%string_e = OpVariable %cptr_string_10 UniformConstant %array_e
%array_E = OpConstantComposite %string_10 %uchar_E %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_E %uchar_nl %uchar_nul ; "E = %.1E\n"
%string_E = OpVariable %cptr_string_10 UniformConstant %array_E
%array_f = OpConstantComposite %string_10 %uchar_f %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_f %uchar_nl %uchar_nul ; "f = %.1f\n"
%string_f = OpVariable %cptr_string_10 UniformConstant %array_f
%array_F = OpConstantComposite %string_10 %uchar_F %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_F %uchar_nl %uchar_nul ; "F = %.1F\n"
%string_F = OpVariable %cptr_string_10 UniformConstant %array_F
%array_g = OpConstantComposite %string_10 %uchar_g %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_g %uchar_nl %uchar_nul ; "g = %.1g\n"
%string_g = OpVariable %cptr_string_10 UniformConstant %array_g
%array_G = OpConstantComposite %string_10 %uchar_G %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_G %uchar_nl %uchar_nul ; "G = %.1G\n"
%string_G = OpVariable %cptr_string_10 UniformConstant %array_G

%test = OpFunction %void None %kernel_sig
%d = OpFunctionParameter %double
%entry = OpLabel

%fmt_a = OpBitcast %cptr_char %string_a
%printf_a = OpExtInst %uint %clext printf %fmt_a %d
%fmt_A = OpBitcast %cptr_char %string_A
%printf_A = OpExtInst %uint %clext printf %fmt_A %d
%fmt_e = OpBitcast %cptr_char %string_e
%printf_e = OpExtInst %uint %clext printf %fmt_e %d
%fmt_E = OpBitcast %cptr_char %string_E
%printf_E = OpExtInst %uint %clext printf %fmt_E %d
%fmt_f = OpBitcast %cptr_char %string_f
%printf_f = OpExtInst %uint %clext printf %fmt_f %d
%fmt_F = OpBitcast %cptr_char %string_F
%printf_F = OpExtInst %uint %clext printf %fmt_F %d
%fmt_g = OpBitcast %cptr_char %string_g
%printf_g = OpExtInst %uint %clext printf %fmt_g %d
%fmt_G = OpBitcast %cptr_char %string_G
%printf_G = OpExtInst %uint %clext printf %fmt_G %d

OpReturn
OpFunctionEnd
93 changes: 93 additions & 0 deletions test_conformance/spirv_new/spirv_asm/printf_operands_scalar_fp64.spvasm64
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,93 @@
; kernel void printf_operands_scalar_fp64(double d)
; {
; printf("a = %.1a\n", d);
; printf("A = %.1A\n", d);
; printf("e = %.1e\n", d);
; printf("E = %.1E\n", d);
; printf("f = %.1f\n", d);
; printf("F = %.1F\n", d);
; printf("g = %.1g\n", d);
; printf("G = %.1G\n", d);
; }
OpCapability Addresses
OpCapability Linkage
OpCapability Kernel
OpCapability Float64
OpCapability Int8
%clext = OpExtInstImport "OpenCL.std"
OpMemoryModel Physical64 OpenCL
OpEntryPoint Kernel %test "printf_operands_scalar_fp64"
%uchar = OpTypeInt 8 0
%uint = OpTypeInt 32 0
%uint_8 = OpConstant %uint 8
%uint_10 = OpConstant %uint 10
%uint_12 = OpConstant %uint 12
%uchar_nul = OpConstant %uchar 0
%uchar_nl = OpConstant %uchar 10
%uchar_sp = OpConstant %uchar 32
%uchar_pct = OpConstant %uchar 37
%uchar_dot = OpConstant %uchar 46
%uchar_1 = OpConstant %uchar 49
%uchar_eq = OpConstant %uchar 61
%uchar_A = OpConstant %uchar 65
%uchar_E = OpConstant %uchar 69
%uchar_F = OpConstant %uchar 70
%uchar_G = OpConstant %uchar 71
%uchar_X = OpConstant %uchar 88
%uchar_a = OpConstant %uchar 97
%uchar_d = OpConstant %uchar 100
%uchar_e = OpConstant %uchar 101
%uchar_f = OpConstant %uchar 102
%uchar_g = OpConstant %uchar 103
%uchar_h = OpConstant %uchar 104
%uchar_i = OpConstant %uchar 105
%uchar_o = OpConstant %uchar 111
%uchar_u = OpConstant %uchar 117
%uchar_x = OpConstant %uchar 120
%string_10 = OpTypeArray %uchar %uint_10
%cptr_string_10 = OpTypePointer UniformConstant %string_10
%void = OpTypeVoid
%double = OpTypeFloat 64
%kernel_sig = OpTypeFunction %void %double
%cptr_char = OpTypePointer UniformConstant %uchar

%array_a = OpConstantComposite %string_10 %uchar_a %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_a %uchar_nl %uchar_nul ; "a = %.1a\n"
%string_a = OpVariable %cptr_string_10 UniformConstant %array_a
%array_A = OpConstantComposite %string_10 %uchar_A %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_A %uchar_nl %uchar_nul ; "A = %.1A\n"
%string_A = OpVariable %cptr_string_10 UniformConstant %array_A
%array_e = OpConstantComposite %string_10 %uchar_e %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_e %uchar_nl %uchar_nul ; "e = %.1e\n"
%string_e = OpVariable %cptr_string_10 UniformConstant %array_e
%array_E = OpConstantComposite %string_10 %uchar_E %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_E %uchar_nl %uchar_nul ; "E = %.1E\n"
%string_E = OpVariable %cptr_string_10 UniformConstant %array_E
%array_f = OpConstantComposite %string_10 %uchar_f %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_f %uchar_nl %uchar_nul ; "f = %.1f\n"
%string_f = OpVariable %cptr_string_10 UniformConstant %array_f
%array_F = OpConstantComposite %string_10 %uchar_F %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_F %uchar_nl %uchar_nul ; "F = %.1F\n"
%string_F = OpVariable %cptr_string_10 UniformConstant %array_F
%array_g = OpConstantComposite %string_10 %uchar_g %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_g %uchar_nl %uchar_nul ; "g = %.1g\n"
%string_g = OpVariable %cptr_string_10 UniformConstant %array_g
%array_G = OpConstantComposite %string_10 %uchar_G %uchar_sp %uchar_eq %uchar_sp %uchar_pct %uchar_dot %uchar_1 %uchar_G %uchar_nl %uchar_nul ; "G = %.1G\n"
%string_G = OpVariable %cptr_string_10 UniformConstant %array_G

%test = OpFunction %void None %kernel_sig
%d = OpFunctionParameter %double
%entry = OpLabel

%fmt_a = OpBitcast %cptr_char %string_a
%printf_a = OpExtInst %uint %clext printf %fmt_a %d
%fmt_A = OpBitcast %cptr_char %string_A
%printf_A = OpExtInst %uint %clext printf %fmt_A %d
%fmt_e = OpBitcast %cptr_char %string_e
%printf_e = OpExtInst %uint %clext printf %fmt_e %d
%fmt_E = OpBitcast %cptr_char %string_E
%printf_E = OpExtInst %uint %clext printf %fmt_E %d
%fmt_f = OpBitcast %cptr_char %string_f
%printf_f = OpExtInst %uint %clext printf %fmt_f %d
%fmt_F = OpBitcast %cptr_char %string_F
%printf_F = OpExtInst %uint %clext printf %fmt_F %d
%fmt_g = OpBitcast %cptr_char %string_g
%printf_g = OpExtInst %uint %clext printf %fmt_g %d
%fmt_G = OpBitcast %cptr_char %string_G
%printf_G = OpExtInst %uint %clext printf %fmt_G %d

OpReturn
OpFunctionEnd
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