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https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
Move all inline-asm-fpstack tests to a single file.
Also fix some of the tests that were actually testing wrong behavior - An input operand in {st} is only popped by the inline asm when {st} is also in the clobber list. The original bug reports all had ~{st} clobbers as they should. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133916 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -26,7 +26,7 @@ define double @test2() {
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; CHECK-NOT: fstp
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; CHECK: ret
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define void @test3(x86_fp80 %X) {
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call void asm sideeffect "frob ", "{st(0)},~{dirflag},~{fpsr},~{flags}"( x86_fp80 %X)
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call void asm sideeffect "frob ", "{st(0)},~{st},~{dirflag},~{fpsr},~{flags}"( x86_fp80 %X)
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ret void
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}
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@ -37,7 +37,7 @@ define void @test3(x86_fp80 %X) {
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; CHECK-NOT: fstp
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; CHECK: ret
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define void @test4(double %X) {
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call void asm sideeffect "frob ", "{st(0)},~{dirflag},~{fpsr},~{flags}"( double %X)
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call void asm sideeffect "frob ", "{st(0)},~{st},~{dirflag},~{fpsr},~{flags}"( double %X)
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ret void
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}
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@ -49,7 +49,7 @@ define void @test4(double %X) {
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; CHECK: ret
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define void @test5(double %X) {
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%Y = fadd double %X, 123.0
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call void asm sideeffect "frob ", "{st(0)},~{dirflag},~{fpsr},~{flags}"( double %Y)
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call void asm sideeffect "frob ", "{st(0)},~{st},~{dirflag},~{fpsr},~{flags}"( double %Y)
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ret void
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}
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@ -86,3 +86,77 @@ entry:
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ret void
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}
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; PR4185
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; Passing a non-killed value to asm in {st}.
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; Make sure it is duped before.
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; asm kills st(0), so we shouldn't pop anything
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; CHECK: testPR4185
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; CHECK: fld %st(0)
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; CHECK: fistpl
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; CHECK-NOT: fstp
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; CHECK: fistpl
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; CHECK-NOT: fstp
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; CHECK: ret
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; A valid alternative would be to remat the constant pool load before each
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; inline asm.
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define void @testPR4185() {
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return:
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call void asm sideeffect "fistpl $0", "{st},~{st}"(double 1.000000e+06)
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call void asm sideeffect "fistpl $0", "{st},~{st}"(double 1.000000e+06)
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ret void
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}
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; PR4459
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; The return value from ceil must be duped before being consumed by asm.
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; CHECK: testPR4459
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; CHECK: ceil
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; CHECK: fld %st(0)
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; CHECK-NOT: fxch
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; CHECK: fistpl
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; CHECK-NOT: fxch
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; CHECK: fstpt
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; CHECK: test
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define void @testPR4459(x86_fp80 %a) {
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entry:
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%0 = call x86_fp80 @ceil(x86_fp80 %a)
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call void asm sideeffect "fistpl $0", "{st},~{st}"( x86_fp80 %0)
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call void @test3(x86_fp80 %0 )
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ret void
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}
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declare x86_fp80 @ceil(x86_fp80)
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; PR4484
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; test1 leaves a value on the stack that is needed after the asm.
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; CHECK: testPR4484
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; CHECK: test1
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; CHECK-NOT: fstp
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; Load %a from stack after ceil
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; CHECK: fldt
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; CHECK-NOT: fxch
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; CHECK: fistpl
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; CHECK-NOT: fstp
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; Set up call to test.
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; CHECK: fstpt
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; CHECK: test
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define void @testPR4484(x86_fp80 %a) {
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entry:
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%0 = call x86_fp80 @test1()
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call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %a)
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call void @test3(x86_fp80 %0)
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ret void
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}
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; PR4485
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; CHECK: testPR4485
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define void @testPR4485(x86_fp80* %a) {
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entry:
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%0 = load x86_fp80* %a, align 16
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%1 = fmul x86_fp80 %0, 0xK4006B400000000000000
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%2 = fmul x86_fp80 %1, 0xK4012F424000000000000
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tail call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %2)
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%3 = load x86_fp80* %a, align 16
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%4 = fmul x86_fp80 %3, 0xK4006B400000000000000
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%5 = fmul x86_fp80 %4, 0xK4012F424000000000000
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tail call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %5)
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ret void
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}
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@ -1,21 +0,0 @@
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; RUN: llc < %s -march=x86 | FileCheck %s
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; PR4185
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; Passing a non-killed value to asm in {st}.
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; Make sure it is duped before.
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; asm kills st(0), so we shouldn't pop anything
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; CHECK: fld %st(0)
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; CHECK: fistpl
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; CHECK-NOT: fstp
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; CHECK: fistpl
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; CHECK-NOT: fstp
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; CHECK: ret
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define void @test() {
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return:
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call void asm sideeffect "fistpl $0", "{st}"(double 1.000000e+06)
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call void asm sideeffect "fistpl $0", "{st}"(double 1.000000e+06)
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ret void
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}
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; A valid alternative would be to remat the constant pool load before each
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; inline asm.
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@ -1,20 +0,0 @@
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; RUN: llc < %s -march=x86 | FileCheck %s
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; PR4459
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; The return value from ceil must be duped before being consumed by asm.
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; CHECK: ceil
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; CHECK: fld %st(0)
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; CHECK-NOT: fxch
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; CHECK: fistpl
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; CHECK-NOT: fxch
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; CHECK: fstpt
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; CHECK: test
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define void @test2(x86_fp80 %a) {
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entry:
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%0 = call x86_fp80 @ceil(x86_fp80 %a)
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call void asm sideeffect "fistpl $0", "{st}"( x86_fp80 %0)
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call void @test(x86_fp80 %0 )
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ret void
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}
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declare x86_fp80 @ceil(x86_fp80)
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declare void @test(x86_fp80)
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@ -1,24 +0,0 @@
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; RUN: llc < %s -march=x86 | FileCheck %s
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; PR4484
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; ceil leaves a value on the stack that is needed after the asm.
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; CHECK: ceil
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; CHECK-NOT: fstp
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; Load %a from stack after ceil
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; CHECK: fldt
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; CHECK-NOT: fxch
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; CHECK: fistpl
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; CHECK-NOT: fstp
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; Set up call to test.
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; CHECK: fstpt
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; CHECK: test
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define void @test2(x86_fp80 %a) {
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entry:
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%0 = call x86_fp80 @ceil()
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call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %a)
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call void @test(x86_fp80 %0)
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ret void
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}
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declare x86_fp80 @ceil()
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declare void @test(x86_fp80)
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@ -1,15 +0,0 @@
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; RUN: llc < %s -march=x86
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; PR4485
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define void @test(x86_fp80* %a) {
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entry:
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%0 = load x86_fp80* %a, align 16
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%1 = fmul x86_fp80 %0, 0xK4006B400000000000000
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%2 = fmul x86_fp80 %1, 0xK4012F424000000000000
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tail call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %2)
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%3 = load x86_fp80* %a, align 16
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%4 = fmul x86_fp80 %3, 0xK4006B400000000000000
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%5 = fmul x86_fp80 %4, 0xK4012F424000000000000
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tail call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %5)
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ret void
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}
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