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With this optimization, we will not always insert zext for values crossing basic blocks, but insert sext if the users of a value crossing basic block has preference of sign predicate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218101 91177308-0d34-0410-b5e6-96231b3b80d8
255 lines
9.3 KiB
LLVM
255 lines
9.3 KiB
LLVM
; RUN: llc < %s -mtriple=aarch64-linux-gnuabi -O2 | FileCheck %s
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; The following cases are for i16
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%struct.s_signed_i16 = type { i16, i16, i16 }
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%struct.s_unsigned_i16 = type { i16, i16, i16 }
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@cost_s_i8_i16 = common global %struct.s_signed_i16 zeroinitializer, align 2
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@cost_u_i16 = common global %struct.s_unsigned_i16 zeroinitializer, align 2
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define void @test_i16_2cmp_signed_1() {
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; CHECK-LABEL: test_i16_2cmp_signed_1
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.gt
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; CHECK-NOT: cmp
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; CHECK: b.ne
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entry:
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%0 = load i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 1), align 2
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%1 = load i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 2), align 2
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%cmp = icmp sgt i16 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i16 %0, i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp eq i16 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i16 %0, i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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define void @test_i16_2cmp_signed_2() {
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; CHECK-LABEL: test_i16_2cmp_signed_2
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.le
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; CHECK-NOT: cmp
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; CHECK: b.ge
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entry:
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%0 = load i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 1), align 2
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%1 = load i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 2), align 2
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%cmp = icmp sgt i16 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i16 %0, i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp slt i16 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i16 %1, i16* getelementptr inbounds (%struct.s_signed_i16* @cost_s_i8_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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define void @test_i16_2cmp_unsigned_1() {
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; CHECK-LABEL: test_i16_2cmp_unsigned_1
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.hi
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; CHECK-NOT: cmp
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; CHECK: b.ne
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entry:
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%0 = load i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 1), align 2
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%1 = load i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 2), align 2
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%cmp = icmp ugt i16 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i16 %0, i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp eq i16 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i16 %0, i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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define void @test_i16_2cmp_unsigned_2() {
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; CHECK-LABEL: test_i16_2cmp_unsigned_2
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.ls
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; CHECK-NOT: cmp
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; CHECK: b.hs
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entry:
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%0 = load i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 1), align 2
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%1 = load i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 2), align 2
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%cmp = icmp ugt i16 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i16 %0, i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp ult i16 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i16 %1, i16* getelementptr inbounds (%struct.s_unsigned_i16* @cost_u_i16, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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; The following cases are for i8
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%struct.s_signed_i8 = type { i8, i8, i8 }
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%struct.s_unsigned_i8 = type { i8, i8, i8 }
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@cost_s = common global %struct.s_signed_i8 zeroinitializer, align 2
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@cost_u_i8 = common global %struct.s_unsigned_i8 zeroinitializer, align 2
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define void @test_i8_2cmp_signed_1() {
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; CHECK-LABEL: test_i8_2cmp_signed_1
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.gt
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; CHECK-NOT: cmp
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; CHECK: b.ne
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entry:
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%0 = load i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 1), align 2
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%1 = load i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 2), align 2
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%cmp = icmp sgt i8 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i8 %0, i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp eq i8 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i8 %0, i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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define void @test_i8_2cmp_signed_2() {
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; CHECK-LABEL: test_i8_2cmp_signed_2
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.le
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; CHECK-NOT: cmp
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; CHECK: b.ge
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entry:
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%0 = load i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 1), align 2
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%1 = load i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 2), align 2
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%cmp = icmp sgt i8 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i8 %0, i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp slt i8 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i8 %1, i8* getelementptr inbounds (%struct.s_signed_i8* @cost_s, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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define void @test_i8_2cmp_unsigned_1() {
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; CHECK-LABEL: test_i8_2cmp_unsigned_1
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.hi
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; CHECK-NOT: cmp
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; CHECK: b.ne
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entry:
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%0 = load i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 1), align 2
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%1 = load i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 2), align 2
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%cmp = icmp ugt i8 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i8 %0, i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp eq i8 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i8 %0, i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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define void @test_i8_2cmp_unsigned_2() {
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; CHECK-LABEL: test_i8_2cmp_unsigned_2
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; CHECK: cmp {{w[0-9]+}}, {{w[0-9]+}}
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; CHECK-NEXT: b.ls
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; CHECK-NOT: cmp
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; CHECK: b.hs
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entry:
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%0 = load i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 1), align 2
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%1 = load i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 2), align 2
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%cmp = icmp ugt i8 %0, %1
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i8 %0, i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 0), align 2
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br label %if.end8
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if.else: ; preds = %entry
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%cmp5 = icmp ult i8 %0, %1
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br i1 %cmp5, label %if.then7, label %if.end8
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if.then7: ; preds = %if.else
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store i8 %1, i8* getelementptr inbounds (%struct.s_unsigned_i8* @cost_u_i8, i64 0, i32 0), align 2
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br label %if.end8
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if.end8: ; preds = %if.else, %if.then7, %if.then
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ret void
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}
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; Make sure the case below won't crash.
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; The optimization of ZERO_EXTEND and SIGN_EXTEND in type legalization stage can't assert
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; the operand of a set_cc is always a TRUNCATE.
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define i1 @foo(float %inl, float %inr) {
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%lval = fptosi float %inl to i8
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%rval = fptosi float %inr to i8
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%sum = icmp eq i8 %lval, %rval
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ret i1 %sum
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}
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