derek.holloway
7502bf64a4
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50 lines
1.9 KiB
LLVM
50 lines
1.9 KiB
LLVM
; RUN: llc -mtriple armv7 -target-abi aapcs -float-abi soft -O0 -o - < %s \
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; RUN: | FileCheck %s -check-prefix CHECK-SOFT -check-prefix CHECK
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; RUN: llc -mtriple armv7 -target-abi aapcs -float-abi hard -O0 -o - < %s \
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; RUN: | FileCheck %s -check-prefix CHECK-HARD -check-prefix CHECK
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; Tests for passing floating-point regs. Variadic functions will always use
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; general-purpose registers. Standard functions will use the floating-point
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; registers if there is hardware FP available.
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declare i1 @non_variadic(float, float, float, float)
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declare i1 @non_variadic_big(float, float, float, float, float, float)
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declare i1 @variadic(float, ...)
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define void @non_variadic_fp(float %x, float %y) {
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; CHECK-LABEL: non_variadic_fp:
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; CHECK: b non_variadic
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entry:
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%call = tail call i1 (float, float, float, float) @non_variadic(float %y, float %x, float %x, float %y)
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ret void
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}
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define void @variadic_fp(float %x, float %y) {
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; CHECK-LABEL: variadic_fp:
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; CHECK: b variadic
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entry:
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%call = tail call i1 (float, ...) @variadic(float %y, float %x, float %x, float %y)
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ret void
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}
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; With soft-float, general-purpose registers are used and there are not enough
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; of them to handle the 6 arguments. With hard-float, we have plenty of regs
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; (s0-s15) to pass FP arguments.
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define void @non_variadic_fp_big(float %x, float %y) {
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; CHECK-LABEL: non_variadic_fp_big:
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; CHECK-SOFT: bl non_variadic_big
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; CHECK-HARD: b non_variadic_big
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entry:
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%call = tail call i1 (float, float, float, float, float, float) @non_variadic_big(float %y, float %x, float %x, float %y, float %x, float %y)
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ret void
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}
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; Variadic functions cannot use FP regs to pass arguments; only GP regs.
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define void @variadic_fp_big(float %x, float %y) {
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; CHECK-LABEL: variadic_fp_big:
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; CHECK: bl variadic
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entry:
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%call = tail call i1 (float, ...) @variadic(float %y, float %x, float %x, float %y, float %x, float %y)
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ret void
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}
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