mirror of
https://github.com/c64scene-ar/llvm-6502.git
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47a8607721
This subsumes several other transforms while enabling us to catch more cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147777 91177308-0d34-0410-b5e6-96231b3b80d8
180 lines
3.5 KiB
LLVM
180 lines
3.5 KiB
LLVM
; RUN: opt -S -instcombine < %s | FileCheck %s
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declare void @foo()
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define void @test1(i32 %a, i32 %b) nounwind {
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%1 = icmp slt i32 %a, 0
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%2 = icmp slt i32 %b, 0
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%or.cond = or i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test1
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; CHECK-NEXT: %1 = or i32 %a, %b
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; CHECK-NEXT: %2 = icmp slt i32 %1, 0
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; CHECK-NEXT: br
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test2(i32 %a, i32 %b) nounwind {
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%1 = icmp sgt i32 %a, -1
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%2 = icmp sgt i32 %b, -1
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%or.cond = or i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test2
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; CHECK-NEXT: %1 = and i32 %a, %b
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; CHECK-NEXT: %2 = icmp sgt i32 %1, -1
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; CHECK-NEXT: br
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test3(i32 %a, i32 %b) nounwind {
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%1 = icmp slt i32 %a, 0
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%2 = icmp slt i32 %b, 0
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%or.cond = and i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test3
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; CHECK-NEXT: %1 = and i32 %a, %b
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; CHECK-NEXT: %2 = icmp slt i32 %1, 0
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; CHECK-NEXT: br
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test4(i32 %a, i32 %b) nounwind {
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%1 = icmp sgt i32 %a, -1
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%2 = icmp sgt i32 %b, -1
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%or.cond = and i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test4
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; CHECK-NEXT: %1 = or i32 %a, %b
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; CHECK-NEXT: %2 = icmp sgt i32 %1, -1
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; CHECK-NEXT: br
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test5(i32 %a) nounwind {
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%and = and i32 %a, 134217728
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%1 = icmp eq i32 %and, 0
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%2 = icmp sgt i32 %a, -1
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%or.cond = and i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test5
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; CHECK-NEXT: %1 = and i32 %a, -2013265920
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; CHECK-NEXT: %2 = icmp eq i32 %1, 0
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; CHECK-NEXT: br i1 %2, label %if.then, label %if.end
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test6(i32 %a) nounwind {
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%1 = icmp sgt i32 %a, -1
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%and = and i32 %a, 134217728
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%2 = icmp eq i32 %and, 0
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%or.cond = and i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test6
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; CHECK-NEXT: %1 = and i32 %a, -2013265920
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; CHECK-NEXT: %2 = icmp eq i32 %1, 0
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; CHECK-NEXT: br i1 %2, label %if.then, label %if.end
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test7(i32 %a) nounwind {
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%and = and i32 %a, 134217728
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%1 = icmp ne i32 %and, 0
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%2 = icmp slt i32 %a, 0
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%or.cond = or i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test7
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; CHECK-NEXT: %1 = and i32 %a, -2013265920
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; CHECK-NEXT: %2 = icmp eq i32 %1, 0
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; CHECK-NEXT: br i1 %2, label %if.end, label %if.the
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test8(i32 %a) nounwind {
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%1 = icmp slt i32 %a, 0
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%and = and i32 %a, 134217728
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%2 = icmp ne i32 %and, 0
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%or.cond = or i1 %1, %2
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test8
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; CHECK-NEXT: %1 = and i32 %a, -2013265920
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; CHECK-NEXT: %2 = icmp eq i32 %1, 0
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; CHECK-NEXT: br i1 %2, label %if.end, label %if.the
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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define void @test9(i32 %a) nounwind {
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%1 = and i32 %a, 1073741824
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%2 = icmp ne i32 %1, 0
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%3 = icmp sgt i32 %a, -1
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%or.cond = and i1 %2, %3
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br i1 %or.cond, label %if.then, label %if.end
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; CHECK: @test9
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; CHECK-NEXT: %1 = and i32 %a, -1073741824
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; CHECK-NEXT: %2 = icmp eq i32 %1, 1073741824
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; CHECK-NEXT: br i1 %2, label %if.then, label %if.end
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if.then:
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tail call void @foo() nounwind
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ret void
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if.end:
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ret void
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}
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