; RUN: llc < %s -O2 -mtriple=x86_64-linux-android -mattr=+mmx | FileCheck %s
; RUN: llc < %s -O2 -mtriple=x86_64-linux-gnu -mattr=+mmx | FileCheck %s
; These tests were generated from simplified libm C code.
; When compiled for the x86_64-linux-android target,
; long double is mapped to f128 type that should be passed
; in SSE registers. When the f128 type calling convention
; problem was fixed, old llvm code failed to handle f128 values
; in several f128/i128 type operations. These unit tests hopefully
; will catch regression in any future change in this area.
; To modified or enhance these test cases, please consult libm
; code pattern and compile with -target x86_64-linux-android
; to generate IL. The __float128 keyword if not accepted by
; clang, just define it to "long double".
;
; typedef long double __float128;
; union IEEEl2bits {
; __float128 e;
; struct {
; unsigned long manl :64;
; unsigned long manh :48;
; unsigned int exp :15;
; unsigned int sign :1;
; } bits;
; struct {
; unsigned long manl :64;
; unsigned long manh :48;
; unsigned int expsign :16;
; } xbits;
; };
; C code:
; void foo(__float128 x);
; void TestUnionLD1(__float128 s, unsigned long n) {
; union IEEEl2bits u;
; __float128 w;
; u.e = s;
; u.bits.manh = n;
; w = u.e;
; foo(w);
; }
define void @TestUnionLD1(fp128 %s, i64 %n) #0 {
entry:
%0 = bitcast fp128 %s to i128
%1 = zext i64 %n to i128
%bf.value = shl nuw i128 %1, 64
%bf.shl = and i128 %bf.value, 5192296858534809181786422619668480
%bf.clear = and i128 %0, -5192296858534809181786422619668481
%bf.set = or i128 %bf.shl, %bf.clear
%2 = bitcast i128 %bf.set to fp128
tail call void @foo(fp128 %2) #2
ret void
; CHECK-LABEL: TestUnionLD1:
; CHECK: movaps %xmm0, -24(%rsp)
; CHECK-NEXT: movq -24(%rsp), %rax
; CHECK-NEXT: movabsq $281474976710655, %rcx
; CHECK-NEXT: andq %rdi, %rcx
; CHECK-NEXT: movabsq $-281474976710656, %rdx
; CHECK-NEXT: andq -16(%rsp), %rdx
; CHECK-NEXT: movq %rax, -40(%rsp)
; CHECK-NEXT: orq %rcx, %rdx
; CHECK-NEXT: movq %rdx, -32(%rsp)
; CHECK-NEXT: movaps -40(%rsp), %xmm0
; CHECK-NEXT: jmp foo
}
; C code:
; __float128 TestUnionLD2(__float128 s) {
; union IEEEl2bits u;
; __float128 w;
; u.e = s;
; u.bits.manl = 0;
; w = u.e;
; return w;
; }
define fp128 @TestUnionLD2(fp128 %s) #0 {
entry:
%0 = bitcast fp128 %s to i128
%bf.clear = and i128 %0, -18446744073709551616
%1 = bitcast i128 %bf.clear to fp128
ret fp128 %1
; CHECK-LABEL: TestUnionLD2:
; CHECK: movaps %xmm0, -24(%rsp)
; CHECK-NEXT: movq -16(%rsp), %rax
; CHECK-NEXT: movq %rax, -32(%rsp)
; CHECK-NEXT: movq $0, -40(%rsp)
; CHECK-NEXT: movaps -40(%rsp), %xmm0
; CHECK-NEXT: retq
}
; C code:
; __float128 TestI128_1(__float128 x)
; {
; union IEEEl2bits z;
; z.e = x;
; z.bits.sign = 0;
; return (z.e < 0.1L) ? 1.0L : 2.0L;
; }
define fp128 @TestI128_1(fp128 %x) #0 {
entry:
%0 = bitcast fp128 %x to i128
%bf.clear = and i128 %0, 170141183460469231731687303715884105727
%1 = bitcast i128 %bf.clear to fp128
%cmp = fcmp olt fp128 %1, 0xL999999999999999A3FFB999999999999
%cond = select i1 %cmp, fp128 0xL00000000000000003FFF000000000000, fp128 0xL00000000000000004000000000000000
ret fp128 %cond
; CHECK-LABEL: TestI128_1:
; CHECK: movaps %xmm0,
; CHECK: movabsq $9223372036854775807,
; CHECK: callq __lttf2
; CHECK: testl %eax, %eax
; CHECK: movaps {{.*}}, %xmm0
; CHECK: retq
}
; C code:
; __float128 TestI128_2(__float128 x, __float128 y)
; {
; unsigned short hx;
; union IEEEl2bits ge_u;
; ge_u.e = x;
; hx = ge_u.xbits.expsign;
; return (hx & 0x8000) == 0 ? x : y;
; }
define fp128 @TestI128_2(fp128 %x, fp128 %y) #0 {
entry:
%0 = bitcast fp128 %x to i128
%cmp = icmp sgt i128 %0, -1
%cond = select i1 %cmp, fp128 %x, fp128 %y
ret fp128 %cond
; CHECK-LABEL: TestI128_2:
; CHECK: movaps %xmm0, -24(%rsp)
; CHECK-NEXT: cmpq $0, -16(%rsp)
; CHECK-NEXT: jns
; CHECK: movaps %xmm1, %xmm0
; CHECK: retq
}
; C code:
; __float128 TestI128_3(__float128 x, int *ex)
; {
; union IEEEl2bits u;
; u.e = x;
; if (u.bits.exp == 0) {
; u.e *= 0x1.0p514;
; u.bits.exp = 0x3ffe;
; }
; return (u.e);
; }
define fp128 @TestI128_3(fp128 %x, i32* nocapture readnone %ex) #0 {
entry:
%0 = bitcast fp128 %x to i128
%bf.cast = and i128 %0, 170135991163610696904058773219554885632
%cmp = icmp eq i128 %bf.cast, 0
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%mul = fmul fp128 %x, 0xL00000000000000004201000000000000
%1 = bitcast fp128 %mul to i128
%bf.clear4 = and i128 %1, -170135991163610696904058773219554885633
%bf.set = or i128 %bf.clear4, 85060207136517546210586590865283612672
br label %if.end
if.end: ; preds = %if.then, %entry
%u.sroa.0.0 = phi i128 [ %bf.set, %if.then ], [ %0, %entry ]
%2 = bitcast i128 %u.sroa.0.0 to fp128
ret fp128 %2
; CHECK-LABEL: TestI128_3:
; CHECK: movaps %xmm0,
; CHECK: movabsq $9223090561878065152,
; CHECK: testq
; CHECK: callq __multf3
; CHECK-NEXT: movaps %xmm0
; CHECK: movabsq $-9223090561878065153,
; CHECK: movabsq $4611123068473966592,
; CHECK: retq
}
; C code:
; __float128 TestI128_4(__float128 x)
; {
; union IEEEl2bits u;
; __float128 df;
; u.e = x;
; u.xbits.manl = 0;
; df = u.e;
; return x + df;
; }
define fp128 @TestI128_4(fp128 %x) #0 {
entry:
%0 = bitcast fp128 %x to i128
%bf.clear = and i128 %0, -18446744073709551616
%1 = bitcast i128 %bf.clear to fp128
%add = fadd fp128 %1, %x
ret fp128 %add
; CHECK-LABEL: TestI128_4:
; CHECK: movaps %xmm0, %xmm1
; CHECK-NEXT: movaps %xmm1, 16(%rsp)
; CHECK-NEXT: movq 24(%rsp), %rax
; CHECK-NEXT: movq %rax, 8(%rsp)
; CHECK-NEXT: movq $0, (%rsp)
; CHECK-NEXT: movaps (%rsp), %xmm0
; CHECK-NEXT: callq __addtf3
; CHECK: retq
}
@v128 = common global i128 0, align 16
@v128_2 = common global i128 0, align 16
; C code:
; unsigned __int128 v128, v128_2;
; void TestShift128_2() {
; v128 = ((v128 << 96) | v128_2);
; }
define void @TestShift128_2() #2 {
entry:
%0 = load i128, i128* @v128, align 16
%shl = shl i128 %0, 96
%1 = load i128, i128* @v128_2, align 16
%or = or i128 %shl, %1
store i128 %or, i128* @v128, align 16
ret void
; CHECK-LABEL: TestShift128_2:
; CHECK: movq v128(%rip), %rax
; CHECK-NEXT: shlq $32, %rax
; CHECK-NEXT: movq v128_2(%rip), %rcx
; CHECK-NEXT: orq v128_2+8(%rip), %rax
; CHECK-NEXT: movq %rcx, v128(%rip)
; CHECK-NEXT: movq %rax, v128+8(%rip)
; CHECK-NEXT: retq
}
define fp128 @acosl(fp128 %x) #0 {
entry:
%0 = bitcast fp128 %x to i128
%bf.clear = and i128 %0, -18446744073709551616
%1 = bitcast i128 %bf.clear to fp128
%add = fadd fp128 %1, %x
ret fp128 %add
; CHECK-LABEL: acosl:
; CHECK: movaps %xmm0, %xmm1
; CHECK-NEXT: movaps %xmm1, 16(%rsp)
; CHECK-NEXT: movq 24(%rsp), %rax
; CHECK-NEXT: movq %rax, 8(%rsp)
; CHECK-NEXT: movq $0, (%rsp)
; CHECK-NEXT: movaps (%rsp), %xmm0
; CHECK-NEXT: callq __addtf3
; CHECK: retq
}
; Compare i128 values and check i128 constants.
define fp128 @TestComp(fp128 %x, fp128 %y) #0 {
entry:
%0 = bitcast fp128 %x to i128
%cmp = icmp sgt i128 %0, -1
%cond = select i1 %cmp, fp128 %x, fp128 %y
ret fp128 %cond
; CHECK-LABEL: TestComp:
; CHECK: movaps %xmm0, -24(%rsp)
; CHECK-NEXT: cmpq $0, -16(%rsp)
; CHECK-NEXT: jns
; CHECK: movaps %xmm1, %xmm0
; CHECK: retq
}
declare void @foo(fp128) #1
; Test logical operations on fp128 values.
define fp128 @TestFABS_LD(fp128 %x) #0 {
entry:
%call = tail call fp128 @fabsl(fp128 %x) #2
ret fp128 %call
; CHECK-LABEL: TestFABS_LD
; CHECK: andps {{.*}}, %xmm0
; CHECK-NEXT: retq
}
declare fp128 @fabsl(fp128) #1
declare fp128 @copysignl(fp128, fp128) #1
; Test more complicated logical operations generated from copysignl.
define void @TestCopySign({ fp128, fp128 }* noalias nocapture sret %agg.result, { fp128, fp128 }* byval nocapture readonly align 16 %z) #0 {
entry:
%z.realp = getelementptr inbounds { fp128, fp128 }, { fp128, fp128 }* %z, i64 0, i32 0
%z.real = load fp128, fp128* %z.realp, align 16
%z.imagp = getelementptr inbounds { fp128, fp128 }, { fp128, fp128 }* %z, i64 0, i32 1
%z.imag4 = load fp128, fp128* %z.imagp, align 16
%cmp = fcmp ogt fp128 %z.real, %z.imag4
%sub = fsub fp128 %z.imag4, %z.imag4
br i1 %cmp, label %if.then, label %cleanup
if.then: ; preds = %entry
%call = tail call fp128 @fabsl(fp128 %sub) #2
br label %cleanup
cleanup: ; preds = %entry, %if.then
%z.real.sink = phi fp128 [ %z.real, %if.then ], [ %sub, %entry ]
%call.sink = phi fp128 [ %call, %if.then ], [ %z.real, %entry ]
%call5 = tail call fp128 @copysignl(fp128 %z.real.sink, fp128 %z.imag4) #2
%0 = getelementptr inbounds { fp128, fp128 }, { fp128, fp128 }* %agg.result, i64 0, i32 0
%1 = getelementptr inbounds { fp128, fp128 }, { fp128, fp128 }* %agg.result, i64 0, i32 1
store fp128 %call.sink, fp128* %0, align 16
store fp128 %call5, fp128* %1, align 16
ret void
; CHECK-LABEL: TestCopySign
; CHECK-NOT: call
; CHECK: callq __subtf3
; CHECK-NOT: call
; CHECK: callq __gttf2
; CHECK-NOT: call
; CHECK: andps {{.*}}, %xmm0
; CHECK: retq
}
attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+ssse3,+sse3,+popcnt,+sse,+sse2,+sse4.1,+sse4.2" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+ssse3,+sse3,+popcnt,+sse,+sse2,+sse4.1,+sse4.2" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind readnone }