| 1 | // RUN: %clang_cc1 -triple armv7a--none-eabi -target-abi aapcs -mfloat-abi soft -fallow-half-arguments-and-returns -emit-llvm -o - -O1 %s | FileCheck %s --check-prefix=CHECK --check-prefix=SOFT |
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| 2 | // RUN: %clang_cc1 -triple armv7a--none-eabi -target-abi aapcs -mfloat-abi hard -fallow-half-arguments-and-returns -emit-llvm -o - -O1 %s | FileCheck %s --check-prefix=CHECK --check-prefix=HARD |
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| 3 | // RUN: %clang_cc1 -triple armv7a--none-eabi -target-abi aapcs -mfloat-abi soft -fnative-half-arguments-and-returns -emit-llvm -o - -O1 %s | FileCheck %s --check-prefix=NATIVE |
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| 4 | |
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| 5 | __fp16 g; |
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| 6 | |
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| 7 | void t1(__fp16 a) { g = a; } |
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| 8 | // SOFT: define void @t1(i32 [[PARAM:%.*]]) |
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| 9 | // SOFT: [[TRUNC:%.*]] = trunc i32 [[PARAM]] to i16 |
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| 10 | // HARD: define arm_aapcs_vfpcc void @t1(float [[PARAM:%.*]]) |
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| 11 | // HARD: [[BITCAST:%.*]] = bitcast float [[PARAM]] to i32 |
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| 12 | // HARD: [[TRUNC:%.*]] = trunc i32 [[BITCAST]] to i16 |
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| 13 | // CHECK: store i16 [[TRUNC]], i16* bitcast (half* @g to i16*) |
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| 14 | // NATIVE: define void @t1(half [[PARAM:%.*]]) |
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| 15 | // NATIVE: store half [[PARAM]], half* @g |
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| 16 | |
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| 17 | __fp16 t2() { return g; } |
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| 18 | // SOFT: define i32 @t2() |
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| 19 | // HARD: define arm_aapcs_vfpcc float @t2() |
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| 20 | // NATIVE: define half @t2() |
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| 21 | // CHECK: [[LOAD:%.*]] = load i16, i16* bitcast (half* @g to i16*) |
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| 22 | // CHECK: [[ZEXT:%.*]] = zext i16 [[LOAD]] to i32 |
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| 23 | // SOFT: ret i32 [[ZEXT]] |
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| 24 | // HARD: [[BITCAST:%.*]] = bitcast i32 [[ZEXT]] to float |
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| 25 | // HARD: ret float [[BITCAST]] |
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| 26 | // NATIVE: [[LOAD:%.*]] = load half, half* @g |
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| 27 | // NATIVE: ret half [[LOAD]] |
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| 28 | |
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| 29 | _Float16 h; |
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| 30 | |
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| 31 | void t3(_Float16 a) { h = a; } |
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| 32 | // SOFT: define void @t3(i32 [[PARAM:%.*]]) |
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| 33 | // SOFT: [[TRUNC:%.*]] = trunc i32 [[PARAM]] to i16 |
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| 34 | // HARD: define arm_aapcs_vfpcc void @t3(float [[PARAM:%.*]]) |
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| 35 | // HARD: [[BITCAST:%.*]] = bitcast float [[PARAM]] to i32 |
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| 36 | // HARD: [[TRUNC:%.*]] = trunc i32 [[BITCAST]] to i16 |
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| 37 | // CHECK: store i16 [[TRUNC]], i16* bitcast (half* @h to i16*) |
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| 38 | // NATIVE: define void @t3(half [[PARAM:%.*]]) |
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| 39 | // NATIVE: store half [[PARAM]], half* @h |
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| 40 | |
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| 41 | _Float16 t4() { return h; } |
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| 42 | // SOFT: define i32 @t4() |
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| 43 | // HARD: define arm_aapcs_vfpcc float @t4() |
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| 44 | // NATIVE: define half @t4() |
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| 45 | // CHECK: [[LOAD:%.*]] = load i16, i16* bitcast (half* @h to i16*) |
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| 46 | // CHECK: [[ZEXT:%.*]] = zext i16 [[LOAD]] to i32 |
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| 47 | // SOFT: ret i32 [[ZEXT]] |
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| 48 | // HARD: [[BITCAST:%.*]] = bitcast i32 [[ZEXT]] to float |
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| 49 | // HARD: ret float [[BITCAST]] |
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| 50 | // NATIVE: [[LOAD:%.*]] = load half, half* @h |
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| 51 | // NATIVE: ret half [[LOAD]] |
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| 52 | |
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