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; RUN: llc < %s -march=x86 -mattr=-bmi | FileCheck %s
; Use h-register extract and zero-extend.
define double @foo8(double* nocapture inreg %p, i32 inreg %x) nounwind readonly {
%t0 = lshr i32 %x, 8
%t1 = and i32 %t0, 255
%t2 = getelementptr double* %p, i32 %t1
%t3 = load double* %t2, align 8
ret double %t3
}
; CHECK: foo8:
; CHECK: movzbl %{{[abcd]}}h, %e
define float @foo4(float* nocapture inreg %p, i32 inreg %x) nounwind readonly {
%t0 = lshr i32 %x, 8
%t1 = and i32 %t0, 255
%t2 = getelementptr float* %p, i32 %t1
%t3 = load float* %t2, align 8
ret float %t3
}
; CHECK: foo4:
; CHECK: movzbl %{{[abcd]}}h, %e
define i16 @foo2(i16* nocapture inreg %p, i32 inreg %x) nounwind readonly {
%t0 = lshr i32 %x, 8
%t1 = and i32 %t0, 255
%t2 = getelementptr i16* %p, i32 %t1
%t3 = load i16* %t2, align 8
ret i16 %t3
}
; CHECK: foo2:
; CHECK: movzbl %{{[abcd]}}h, %e
define i8 @foo1(i8* nocapture inreg %p, i32 inreg %x) nounwind readonly {
%t0 = lshr i32 %x, 8
%t1 = and i32 %t0, 255
%t2 = getelementptr i8* %p, i32 %t1
%t3 = load i8* %t2, align 8
ret i8 %t3
}
; CHECK: foo1:
; CHECK: movzbl %{{[abcd]}}h, %e
define i8 @bar8(i8* nocapture inreg %p, i32 inreg %x) nounwind readonly {
%t0 = lshr i32 %x, 5
%t1 = and i32 %t0, 2040
%t2 = getelementptr i8* %p, i32 %t1
%t3 = load i8* %t2, align 8
ret i8 %t3
}
; CHECK: bar8:
; CHECK: movzbl %{{[abcd]}}h, %e
define i8 @bar4(i8* nocapture inreg %p, i32 inreg %x) nounwind readonly {
%t0 = lshr i32 %x, 6
%t1 = and i32 %t0, 1020
%t2 = getelementptr i8* %p, i32 %t1
%t3 = load i8* %t2, align 8
ret i8 %t3
}
; CHECK: bar4:
; CHECK: movzbl %{{[abcd]}}h, %e
define i8 @bar2(i8* nocapture inreg %p, i32 inreg %x) nounwind readonly {
%t0 = lshr i32 %x, 7
%t1 = and i32 %t0, 510
%t2 = getelementptr i8* %p, i32 %t1
%t3 = load i8* %t2, align 8
ret i8 %t3
}
; CHECK: bar2:
; CHECK: movzbl %{{[abcd]}}h, %e
; CHECK: ret
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