2012-02-01 23:20:51 +00:00
|
|
|
; RUN: llc < %s -mcpu=generic -mtriple=i386-apple-darwin | FileCheck %s
|
2008-03-09 08:49:15 +00:00
|
|
|
|
2010-07-10 16:30:25 +00:00
|
|
|
; There should be no stack manipulations between the inline asm and ret.
|
|
|
|
|
; CHECK: test1
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NEXT: ret
|
2008-03-09 08:49:15 +00:00
|
|
|
define x86_fp80 @test1() {
|
|
|
|
|
%tmp85 = call x86_fp80 asm sideeffect "fld0", "={st(0)}"()
|
|
|
|
|
ret x86_fp80 %tmp85
|
|
|
|
|
}
|
|
|
|
|
|
2010-07-10 16:30:25 +00:00
|
|
|
; CHECK: test2
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NEXT: ret
|
2008-03-09 08:49:15 +00:00
|
|
|
define double @test2() {
|
|
|
|
|
%tmp85 = call double asm sideeffect "fld0", "={st(0)}"()
|
|
|
|
|
ret double %tmp85
|
|
|
|
|
}
|
|
|
|
|
|
2010-07-10 16:30:25 +00:00
|
|
|
; Setting up argument in st(0) should be a single fld.
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|
|
|
|
; CHECK: test3
|
|
|
|
|
; CHECK: fld
|
|
|
|
|
; CHECK-NEXT: InlineAsm Start
|
|
|
|
|
; Asm consumes stack, nothing should be popped.
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
2008-03-09 09:15:31 +00:00
|
|
|
define void @test3(x86_fp80 %X) {
|
2011-06-27 17:27:37 +00:00
|
|
|
call void asm sideeffect "frob ", "{st(0)},~{st},~{dirflag},~{fpsr},~{flags}"( x86_fp80 %X)
|
2008-03-09 09:15:31 +00:00
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
2010-07-10 16:30:25 +00:00
|
|
|
; CHECK: test4
|
|
|
|
|
; CHECK: fld
|
|
|
|
|
; CHECK-NEXT: InlineAsm Start
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
2008-03-09 09:15:31 +00:00
|
|
|
define void @test4(double %X) {
|
2011-06-27 17:27:37 +00:00
|
|
|
call void asm sideeffect "frob ", "{st(0)},~{st},~{dirflag},~{fpsr},~{flags}"( double %X)
|
2008-03-09 09:15:31 +00:00
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
2010-07-10 16:30:25 +00:00
|
|
|
; Same as test3/4, but using value from fadd.
|
|
|
|
|
; The fadd can be done in xmm or x87 regs - we don't test that.
|
|
|
|
|
; CHECK: test5
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
2008-03-09 09:15:31 +00:00
|
|
|
define void @test5(double %X) {
|
2009-06-04 22:49:04 +00:00
|
|
|
%Y = fadd double %X, 123.0
|
2011-06-27 17:27:37 +00:00
|
|
|
call void asm sideeffect "frob ", "{st(0)},~{st},~{dirflag},~{fpsr},~{flags}"( double %Y)
|
2008-03-09 09:15:31 +00:00
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
2010-07-10 16:30:25 +00:00
|
|
|
; CHECK: test6
|
2008-03-11 19:50:13 +00:00
|
|
|
define void @test6(double %A, double %B, double %C,
|
|
|
|
|
double %D, double %E) nounwind {
|
|
|
|
|
entry:
|
2010-07-10 16:30:25 +00:00
|
|
|
; Uses the same value twice, should have one fstp after the asm.
|
|
|
|
|
; CHECK: foo
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NEXT: fstp
|
|
|
|
|
; CHECK-NOT: fstp
|
2008-03-11 19:50:13 +00:00
|
|
|
tail call void asm sideeffect "foo $0 $1", "f,f,~{dirflag},~{fpsr},~{flags}"( double %A, double %A ) nounwind
|
2010-07-10 16:30:25 +00:00
|
|
|
; Uses two different values, should be in st(0)/st(1) and both be popped.
|
|
|
|
|
; CHECK: bar
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NEXT: fstp
|
|
|
|
|
; CHECK-NEXT: fstp
|
2008-03-11 19:50:13 +00:00
|
|
|
tail call void asm sideeffect "bar $0 $1", "f,f,~{dirflag},~{fpsr},~{flags}"( double %B, double %C ) nounwind
|
2010-07-10 16:30:25 +00:00
|
|
|
; Uses two different values, one of which isn't killed in this asm, it
|
|
|
|
|
; should not be popped after the asm.
|
|
|
|
|
; CHECK: baz
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NEXT: fstp
|
|
|
|
|
; CHECK-NOT: fstp
|
2008-03-11 19:50:13 +00:00
|
|
|
tail call void asm sideeffect "baz $0 $1", "f,f,~{dirflag},~{fpsr},~{flags}"( double %D, double %E ) nounwind
|
2010-07-10 16:30:25 +00:00
|
|
|
; This is the last use of %D, so it should be popped after.
|
|
|
|
|
; CHECK: baz
|
|
|
|
|
; CHECK: InlineAsm End
|
|
|
|
|
; CHECK-NEXT: fstp
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
2008-03-11 19:50:13 +00:00
|
|
|
tail call void asm sideeffect "baz $0", "f,~{dirflag},~{fpsr},~{flags}"( double %D ) nounwind
|
|
|
|
|
ret void
|
|
|
|
|
}
|
2008-03-09 08:49:15 +00:00
|
|
|
|
2011-06-27 17:27:37 +00:00
|
|
|
; PR4185
|
|
|
|
|
; Passing a non-killed value to asm in {st}.
|
|
|
|
|
; Make sure it is duped before.
|
|
|
|
|
; asm kills st(0), so we shouldn't pop anything
|
|
|
|
|
; CHECK: testPR4185
|
|
|
|
|
; CHECK: fld %st(0)
|
|
|
|
|
; CHECK: fistpl
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: fistpl
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
; A valid alternative would be to remat the constant pool load before each
|
|
|
|
|
; inline asm.
|
|
|
|
|
define void @testPR4185() {
|
|
|
|
|
return:
|
|
|
|
|
call void asm sideeffect "fistpl $0", "{st},~{st}"(double 1.000000e+06)
|
|
|
|
|
call void asm sideeffect "fistpl $0", "{st},~{st}"(double 1.000000e+06)
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
2011-06-28 18:32:28 +00:00
|
|
|
; Passing a non-killed value through asm in {st}.
|
|
|
|
|
; Make sure it is not duped before.
|
|
|
|
|
; Second asm kills st(0), so we shouldn't pop anything
|
|
|
|
|
; CHECK: testPR4185b
|
|
|
|
|
; CHECK-NOT: fld %st(0)
|
|
|
|
|
; CHECK: fistl
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: fistpl
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
; A valid alternative would be to remat the constant pool load before each
|
|
|
|
|
; inline asm.
|
|
|
|
|
define void @testPR4185b() {
|
|
|
|
|
return:
|
|
|
|
|
call void asm sideeffect "fistl $0", "{st}"(double 1.000000e+06)
|
|
|
|
|
call void asm sideeffect "fistpl $0", "{st},~{st}"(double 1.000000e+06)
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
2011-06-27 17:27:37 +00:00
|
|
|
; PR4459
|
|
|
|
|
; The return value from ceil must be duped before being consumed by asm.
|
|
|
|
|
; CHECK: testPR4459
|
|
|
|
|
; CHECK: ceil
|
|
|
|
|
; CHECK: fld %st(0)
|
|
|
|
|
; CHECK-NOT: fxch
|
|
|
|
|
; CHECK: fistpl
|
|
|
|
|
; CHECK-NOT: fxch
|
|
|
|
|
; CHECK: fstpt
|
|
|
|
|
; CHECK: test
|
|
|
|
|
define void @testPR4459(x86_fp80 %a) {
|
|
|
|
|
entry:
|
|
|
|
|
%0 = call x86_fp80 @ceil(x86_fp80 %a)
|
|
|
|
|
call void asm sideeffect "fistpl $0", "{st},~{st}"( x86_fp80 %0)
|
|
|
|
|
call void @test3(x86_fp80 %0 )
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
declare x86_fp80 @ceil(x86_fp80)
|
|
|
|
|
|
|
|
|
|
; PR4484
|
|
|
|
|
; test1 leaves a value on the stack that is needed after the asm.
|
|
|
|
|
; CHECK: testPR4484
|
|
|
|
|
; CHECK: test1
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; Load %a from stack after ceil
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK-NOT: fxch
|
|
|
|
|
; CHECK: fistpl
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; Set up call to test.
|
|
|
|
|
; CHECK: fstpt
|
|
|
|
|
; CHECK: test
|
|
|
|
|
define void @testPR4484(x86_fp80 %a) {
|
|
|
|
|
entry:
|
|
|
|
|
%0 = call x86_fp80 @test1()
|
|
|
|
|
call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %a)
|
|
|
|
|
call void @test3(x86_fp80 %0)
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
; PR4485
|
|
|
|
|
; CHECK: testPR4485
|
|
|
|
|
define void @testPR4485(x86_fp80* %a) {
|
|
|
|
|
entry:
|
|
|
|
|
%0 = load x86_fp80* %a, align 16
|
|
|
|
|
%1 = fmul x86_fp80 %0, 0xK4006B400000000000000
|
|
|
|
|
%2 = fmul x86_fp80 %1, 0xK4012F424000000000000
|
|
|
|
|
tail call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %2)
|
|
|
|
|
%3 = load x86_fp80* %a, align 16
|
|
|
|
|
%4 = fmul x86_fp80 %3, 0xK4006B400000000000000
|
|
|
|
|
%5 = fmul x86_fp80 %4, 0xK4012F424000000000000
|
|
|
|
|
tail call void asm sideeffect "fistpl $0", "{st},~{st}"(x86_fp80 %5)
|
|
|
|
|
ret void
|
|
|
|
|
}
|
2011-06-28 18:32:28 +00:00
|
|
|
|
|
|
|
|
; An input argument in a fixed position is implicitly popped by the asm only if
|
|
|
|
|
; the input argument is tied to an output register, or it is in the clobber list.
|
|
|
|
|
; The clobber list case is tested above.
|
|
|
|
|
;
|
|
|
|
|
; This doesn't implicitly pop the stack:
|
|
|
|
|
;
|
|
|
|
|
; void fist1(long double x, int *p) {
|
|
|
|
|
; asm volatile ("fistl %1" : : "t"(x), "m"(*p));
|
|
|
|
|
; }
|
|
|
|
|
;
|
|
|
|
|
; CHECK: fist1
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fistl (%e
|
|
|
|
|
; CHECK: fstp
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
define void @fist1(x86_fp80 %x, i32* %p) nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
tail call void asm sideeffect "fistl $1", "{st},*m,~{memory},~{dirflag},~{fpsr},~{flags}"(x86_fp80 %x, i32* %p) nounwind
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
; Here, the input operand is tied to an output which means that is is
|
|
|
|
|
; implicitly popped (and then the output is implicitly pushed).
|
|
|
|
|
;
|
|
|
|
|
; long double fist2(long double x, int *p) {
|
|
|
|
|
; long double y;
|
|
|
|
|
; asm ("fistl %1" : "=&t"(y) : "0"(x), "m"(*p) : "memory");
|
|
|
|
|
; return y;
|
|
|
|
|
; }
|
|
|
|
|
;
|
|
|
|
|
; CHECK: fist2
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fistl (%e
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
define x86_fp80 @fist2(x86_fp80 %x, i32* %p) nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
%0 = tail call x86_fp80 asm "fistl $2", "=&{st},0,*m,~{memory},~{dirflag},~{fpsr},~{flags}"(x86_fp80 %x, i32* %p) nounwind
|
|
|
|
|
ret x86_fp80 %0
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
; An 'f' constraint is never implicitly popped:
|
|
|
|
|
;
|
|
|
|
|
; void fucomp1(long double x, long double y) {
|
|
|
|
|
; asm volatile ("fucomp %1" : : "t"(x), "f"(y) : "st");
|
|
|
|
|
; }
|
|
|
|
|
; CHECK: fucomp1
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fucomp %st
|
|
|
|
|
; CHECK: fstp
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
define void @fucomp1(x86_fp80 %x, x86_fp80 %y) nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
tail call void asm sideeffect "fucomp $1", "{st},f,~{st},~{dirflag},~{fpsr},~{flags}"(x86_fp80 %x, x86_fp80 %y) nounwind
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
; The 'u' constraint is only popped implicitly when clobbered:
|
|
|
|
|
;
|
|
|
|
|
; void fucomp2(long double x, long double y) {
|
|
|
|
|
; asm volatile ("fucomp %1" : : "t"(x), "u"(y) : "st");
|
|
|
|
|
; }
|
|
|
|
|
;
|
|
|
|
|
; void fucomp3(long double x, long double y) {
|
|
|
|
|
; asm volatile ("fucompp %1" : : "t"(x), "u"(y) : "st", "st(1)");
|
|
|
|
|
; }
|
|
|
|
|
;
|
|
|
|
|
; CHECK: fucomp2
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fucomp %st(1)
|
|
|
|
|
; CHECK: fstp
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
;
|
|
|
|
|
; CHECK: fucomp3
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fldt
|
|
|
|
|
; CHECK: fucompp %st(1)
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: ret
|
|
|
|
|
define void @fucomp2(x86_fp80 %x, x86_fp80 %y) nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
tail call void asm sideeffect "fucomp $1", "{st},{st(1)},~{st},~{dirflag},~{fpsr},~{flags}"(x86_fp80 %x, x86_fp80 %y) nounwind
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
define void @fucomp3(x86_fp80 %x, x86_fp80 %y) nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
tail call void asm sideeffect "fucompp $1", "{st},{st(1)},~{st},~{st(1)},~{dirflag},~{fpsr},~{flags}"(x86_fp80 %x, x86_fp80 %y) nounwind
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
; One input, two outputs, one dead output.
|
|
|
|
|
%complex = type { float, float }
|
|
|
|
|
; CHECK: sincos1
|
|
|
|
|
; CHECK: flds
|
|
|
|
|
; CHECK-NOT: fxch
|
|
|
|
|
; CHECK: sincos
|
|
|
|
|
; CHECK-NOT: fstp
|
|
|
|
|
; CHECK: fstp %st(1)
|
|
|
|
|
; CHECK-NOT: fstp
|
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; CHECK: ret
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define float @sincos1(float %x) nounwind ssp {
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entry:
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%0 = tail call %complex asm "sincos", "={st},={st(1)},0,~{dirflag},~{fpsr},~{flags}"(float %x) nounwind
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%asmresult = extractvalue %complex %0, 0
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ret float %asmresult
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}
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; Same thing, swapped output operands.
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; CHECK: sincos2
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; CHECK: flds
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; CHECK-NOT: fxch
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; CHECK: sincos
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; CHECK-NOT: fstp
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; CHECK: fstp %st(1)
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; CHECK-NOT: fstp
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; CHECK: ret
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define float @sincos2(float %x) nounwind ssp {
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entry:
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%0 = tail call %complex asm "sincos", "={st(1)},={st},1,~{dirflag},~{fpsr},~{flags}"(float %x) nounwind
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%asmresult = extractvalue %complex %0, 1
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ret float %asmresult
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}
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; Clobber st(0) after it was live-out/dead from the previous asm.
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; CHECK: sincos3
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; Load x, make a copy for the second asm.
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; CHECK: flds
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; CHECK: fld %st(0)
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; CHECK: sincos
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; Discard dead result in st(0), bring x to the top.
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; CHECK: fstp %st(0)
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; CHECK: fxch
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|
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; x is now in st(0) for the second asm
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; CHECK: sincos
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|
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; Discard both results.
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|
; CHECK: fstp
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|
|
; CHECK: fstp
|
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|
; CHECK: ret
|
|
|
|
|
define float @sincos3(float %x) nounwind ssp {
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|
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|
|
entry:
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|
|
%0 = tail call %complex asm sideeffect "sincos", "={st(1)},={st},1,~{dirflag},~{fpsr},~{flags}"(float %x) nounwind
|
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|
|
%1 = tail call %complex asm sideeffect "sincos", "={st(1)},={st},1,~{dirflag},~{fpsr},~{flags}"(float %x) nounwind
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|
|
%asmresult = extractvalue %complex %0, 0
|
|
|
|
|
ret float %asmresult
|
|
|
|
|
}
|
2011-08-08 17:15:43 +00:00
|
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|
|
; Pass the same value in two fixed stack slots.
|
|
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|
|
; CHECK: PR10602
|
|
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|
|
; CHECK: flds LCPI
|
|
|
|
|
; CHECK: fld %st(0)
|
|
|
|
|
; CHECK: fcomi %st(1), %st(0)
|
|
|
|
|
define i32 @PR10602() nounwind ssp {
|
|
|
|
|
entry:
|
|
|
|
|
%0 = tail call i32 asm "fcomi $2, $1; pushf; pop $0", "=r,{st},{st(1)},~{dirflag},~{fpsr},~{flags}"(double 2.000000e+00, double 2.000000e+00) nounwind
|
|
|
|
|
ret i32 %0
|
|
|
|
|
}
|
