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959ddbb5e0
This patch is revised based on patch from Victor Umansky <victor.umansky@intel.com>. More cases are handled in X86's bool simplification, i.e. - SETCC_CARRY - value is truncated to i1 with AND As a by-product, PR5443 is also fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179265 91177308-0d34-0410-b5e6-96231b3b80d8
258 lines
6.7 KiB
LLVM
258 lines
6.7 KiB
LLVM
; RUN: llc < %s -mtriple=i386-apple-darwin10 -mcpu=penryn | FileCheck %s
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; rdar://7475489
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define i32 @test1(i32 %a, i32 %b) nounwind ssp {
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entry:
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; CHECK: test1:
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; CHECK: xorb
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; CHECK-NOT: andb
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; CHECK-NOT: shrb
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; CHECK: testb $64
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%0 = and i32 %a, 16384
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%1 = icmp ne i32 %0, 0
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%2 = and i32 %b, 16384
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%3 = icmp ne i32 %2, 0
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%4 = xor i1 %1, %3
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br i1 %4, label %bb1, label %bb
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bb: ; preds = %entry
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%5 = tail call i32 (...)* @foo() nounwind ; <i32> [#uses=1]
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ret i32 %5
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bb1: ; preds = %entry
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%6 = tail call i32 (...)* @bar() nounwind ; <i32> [#uses=1]
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ret i32 %6
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}
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declare i32 @foo(...)
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declare i32 @bar(...)
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; PR3351 - (P == 0) & (Q == 0) -> (P|Q) == 0
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define i32 @test2(i32* %P, i32* %Q) nounwind ssp {
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entry:
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%a = icmp eq i32* %P, null ; <i1> [#uses=1]
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%b = icmp eq i32* %Q, null ; <i1> [#uses=1]
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%c = and i1 %a, %b
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br i1 %c, label %bb1, label %return
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bb1: ; preds = %entry
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ret i32 4
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return: ; preds = %entry
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ret i32 192
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; CHECK: test2:
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; CHECK: movl 4(%esp), %eax
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; CHECK-NEXT: orl 8(%esp), %eax
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; CHECK-NEXT: jne LBB1_2
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}
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; PR3351 - (P != 0) | (Q != 0) -> (P|Q) != 0
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define i32 @test3(i32* %P, i32* %Q) nounwind ssp {
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entry:
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%a = icmp ne i32* %P, null ; <i1> [#uses=1]
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%b = icmp ne i32* %Q, null ; <i1> [#uses=1]
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%c = or i1 %a, %b
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br i1 %c, label %bb1, label %return
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bb1: ; preds = %entry
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ret i32 4
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return: ; preds = %entry
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ret i32 192
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; CHECK: test3:
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; CHECK: movl 4(%esp), %eax
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; CHECK-NEXT: orl 8(%esp), %eax
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; CHECK-NEXT: je LBB2_2
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}
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; <rdar://problem/7598384>:
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;
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; jCC L1
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; jmp L2
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; L1:
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; ...
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; L2:
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; ...
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;
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; to:
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;
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; jnCC L2
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; L1:
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; ...
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; L2:
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; ...
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define float @test4(float %x, float %y) nounwind readnone optsize ssp {
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entry:
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%0 = fpext float %x to double ; <double> [#uses=1]
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%1 = fpext float %y to double ; <double> [#uses=1]
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%2 = fmul double %0, %1 ; <double> [#uses=3]
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%3 = fcmp oeq double %2, 0.000000e+00 ; <i1> [#uses=1]
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br i1 %3, label %bb2, label %bb1
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; CHECK: jne
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; CHECK-NEXT: jnp
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; CHECK-NOT: jmp
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; CHECK: LBB
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bb1: ; preds = %entry
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%4 = fadd double %2, -1.000000e+00 ; <double> [#uses=1]
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br label %bb2
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bb2: ; preds = %entry, %bb1
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%.0.in = phi double [ %4, %bb1 ], [ %2, %entry ] ; <double> [#uses=1]
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%.0 = fptrunc double %.0.in to float ; <float> [#uses=1]
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ret float %.0
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}
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declare i32 @llvm.x86.sse41.ptestz(<4 x float> %p1, <4 x float> %p2) nounwind
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declare i32 @llvm.x86.sse41.ptestc(<4 x float> %p1, <4 x float> %p2) nounwind
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define <4 x float> @test5(<4 x float> %a, <4 x float> %b) nounwind {
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entry:
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; CHECK: test5:
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; CHECK: ptest
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; CHECK-NEXT: jne
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; CHECK: ret
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%res = call i32 @llvm.x86.sse41.ptestz(<4 x float> %a, <4 x float> %a) nounwind
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%one = icmp ne i32 %res, 0
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br i1 %one, label %bb1, label %bb2
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bb1:
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%c = fadd <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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bb2:
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%d = fdiv <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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return:
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%e = phi <4 x float> [%c, %bb1], [%d, %bb2]
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ret <4 x float> %e
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}
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define <4 x float> @test7(<4 x float> %a, <4 x float> %b) nounwind {
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entry:
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; CHECK: test7:
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; CHECK: ptest
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; CHECK-NEXT: jne
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; CHECK: ret
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%res = call i32 @llvm.x86.sse41.ptestz(<4 x float> %a, <4 x float> %a) nounwind
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%one = trunc i32 %res to i1
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br i1 %one, label %bb1, label %bb2
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bb1:
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%c = fadd <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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bb2:
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%d = fdiv <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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return:
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%e = phi <4 x float> [%c, %bb1], [%d, %bb2]
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ret <4 x float> %e
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}
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define <4 x float> @test8(<4 x float> %a, <4 x float> %b) nounwind {
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entry:
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; CHECK: test8:
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; CHECK: ptest
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; CHECK-NEXT: jae
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; CHECK: ret
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%res = call i32 @llvm.x86.sse41.ptestc(<4 x float> %a, <4 x float> %a) nounwind
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%one = icmp ne i32 %res, 0
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br i1 %one, label %bb1, label %bb2
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bb1:
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%c = fadd <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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bb2:
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%d = fdiv <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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return:
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%e = phi <4 x float> [%c, %bb1], [%d, %bb2]
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ret <4 x float> %e
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}
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define <4 x float> @test10(<4 x float> %a, <4 x float> %b) nounwind {
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entry:
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; CHECK: test10:
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; CHECK: ptest
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; CHECK-NEXT: jae
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; CHECK: ret
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%res = call i32 @llvm.x86.sse41.ptestc(<4 x float> %a, <4 x float> %a) nounwind
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%one = trunc i32 %res to i1
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br i1 %one, label %bb1, label %bb2
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bb1:
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%c = fadd <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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bb2:
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%d = fdiv <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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return:
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%e = phi <4 x float> [%c, %bb1], [%d, %bb2]
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ret <4 x float> %e
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}
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define <4 x float> @test11(<4 x float> %a, <4 x float> %b) nounwind {
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entry:
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; CHECK: test11:
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; CHECK: ptest
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; CHECK-NEXT: jne
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; CHECK: ret
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%res = call i32 @llvm.x86.sse41.ptestz(<4 x float> %a, <4 x float> %a) nounwind
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%one = icmp eq i32 %res, 1
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br i1 %one, label %bb1, label %bb2
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bb1:
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%c = fadd <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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bb2:
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%d = fdiv <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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return:
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%e = phi <4 x float> [%c, %bb1], [%d, %bb2]
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ret <4 x float> %e
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}
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define <4 x float> @test12(<4 x float> %a, <4 x float> %b) nounwind {
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entry:
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; CHECK: test12:
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; CHECK: ptest
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; CHECK-NEXT: je
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; CHECK: ret
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%res = call i32 @llvm.x86.sse41.ptestz(<4 x float> %a, <4 x float> %a) nounwind
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%one = icmp ne i32 %res, 1
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br i1 %one, label %bb1, label %bb2
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bb1:
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%c = fadd <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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bb2:
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%d = fdiv <4 x float> %b, < float 1.000000e+002, float 2.000000e+002, float 3.000000e+002, float 4.000000e+002 >
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br label %return
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return:
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%e = phi <4 x float> [%c, %bb1], [%d, %bb2]
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ret <4 x float> %e
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}
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