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[SystemZ] Immediate compare-and-branch support

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This patch adds support for the CIJ and CGIJ instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182846 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Sandiford
2013-05-29 11:58:52 +00:00
parent b8303eb654
commit 2d664abbfc
14 changed files with 1051 additions and 111 deletions
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96
test/CodeGen/SystemZ/int-cmp-13.ll
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@@ -5,8 +5,7 @@
; Check comparisons with 0.
define double @f1(double %a, double %b, i64 %i1) {
; CHECK: f1:
; CHECK: cghi %r2, 0
; CHECK-NEXT: je
; CHECK: cgije %r2, 0
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp eq i64 %i1, 0
@@ -14,9 +13,32 @@ define double @f1(double %a, double %b, i64 %i1) {
ret double %res
}
; Check the high end of the CGHI range.
; Check the high end of the CGIJ range.
define double @f2(double %a, double %b, i64 %i1) {
; CHECK: f2:
; CHECK: cgije %r2, 127
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp eq i64 %i1, 127
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value up, which must use CGHI instead.
define double @f3(double %a, double %b, i64 %i1) {
; CHECK: f3:
; CHECK: cghi %r2, 128
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp eq i64 %i1, 128
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the CGHI range.
define double @f4(double %a, double %b, i64 %i1) {
; CHECK: f4:
; CHECK: cghi %r2, 32767
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -27,8 +49,8 @@ define double @f2(double %a, double %b, i64 %i1) {
}
; Check the next value up, which must use CGFI.
define double @f3(double %a, double %b, i64 %i1) {
; CHECK: f3:
define double @f5(double %a, double %b, i64 %i1) {
; CHECK: f5:
; CHECK: cgfi %r2, 32768
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -39,8 +61,8 @@ define double @f3(double %a, double %b, i64 %i1) {
}
; Check the high end of the CGFI range.
define double @f4(double %a, double %b, i64 %i1) {
; CHECK: f4:
define double @f6(double %a, double %b, i64 %i1) {
; CHECK: f6:
; CHECK: cgfi %r2, 2147483647
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -51,8 +73,8 @@ define double @f4(double %a, double %b, i64 %i1) {
}
; Check the next value up, which should use CLGFI instead.
define double @f5(double %a, double %b, i64 %i1) {
; CHECK: f5:
define double @f7(double %a, double %b, i64 %i1) {
; CHECK: f7:
; CHECK: clgfi %r2, 2147483648
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -63,8 +85,8 @@ define double @f5(double %a, double %b, i64 %i1) {
}
; Check the high end of the CLGFI range.
define double @f6(double %a, double %b, i64 %i1) {
; CHECK: f6:
define double @f8(double %a, double %b, i64 %i1) {
; CHECK: f8:
; CHECK: clgfi %r2, 4294967295
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -75,8 +97,8 @@ define double @f6(double %a, double %b, i64 %i1) {
}
; Check the next value up, which must use a register comparison.
define double @f7(double %a, double %b, i64 %i1) {
; CHECK: f7:
define double @f9(double %a, double %b, i64 %i1) {
; CHECK: f9:
; CHECK: cgrje %r2,
; CHECK: ldr %f0, %f2
; CHECK: br %r14
@@ -85,11 +107,10 @@ define double @f7(double %a, double %b, i64 %i1) {
ret double %res
}
; Check the high end of the negative CGHI range.
define double @f8(double %a, double %b, i64 %i1) {
; CHECK: f8:
; CHECK: cghi %r2, -1
; CHECK-NEXT: je
; Check the high end of the negative CGIJ range.
define double @f10(double %a, double %b, i64 %i1) {
; CHECK: f10:
; CHECK: cgije %r2, -1
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp eq i64 %i1, -1
@@ -97,9 +118,32 @@ define double @f8(double %a, double %b, i64 %i1) {
ret double %res
}
; Check the low end of the CGIJ range.
define double @f11(double %a, double %b, i64 %i1) {
; CHECK: f11:
; CHECK: cgije %r2, -128
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp eq i64 %i1, -128
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value down, which must use CGHI instead.
define double @f12(double %a, double %b, i64 %i1) {
; CHECK: f12:
; CHECK: cghi %r2, -129
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp eq i64 %i1, -129
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the CGHI range.
define double @f9(double %a, double %b, i64 %i1) {
; CHECK: f9:
define double @f13(double %a, double %b, i64 %i1) {
; CHECK: f13:
; CHECK: cghi %r2, -32768
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -110,8 +154,8 @@ define double @f9(double %a, double %b, i64 %i1) {
}
; Check the next value down, which must use CGFI instead.
define double @f10(double %a, double %b, i64 %i1) {
; CHECK: f10:
define double @f14(double %a, double %b, i64 %i1) {
; CHECK: f14:
; CHECK: cgfi %r2, -32769
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -122,8 +166,8 @@ define double @f10(double %a, double %b, i64 %i1) {
}
; Check the low end of the CGFI range.
define double @f11(double %a, double %b, i64 %i1) {
; CHECK: f11:
define double @f15(double %a, double %b, i64 %i1) {
; CHECK: f15:
; CHECK: cgfi %r2, -2147483648
; CHECK-NEXT: je
; CHECK: ldr %f0, %f2
@@ -134,8 +178,8 @@ define double @f11(double %a, double %b, i64 %i1) {
}
; Check the next value down, which must use register comparison.
define double @f12(double %a, double %b, i64 %i1) {
; CHECK: f12:
define double @f16(double %a, double %b, i64 %i1) {
; CHECK: f16:
; CHECK: cgrje
; CHECK: ldr %f0, %f2
; CHECK: br %r14